First off, you didn’t use the proper formatting. The proper formatting for submitting a WoolWars Map can be found here.
Secondly, I recommend adding more to the map. It looks sort of empty in my opinion. Maybe add a few more islands.
I agree with @ShadowLegend27. The map looks bland with only one block as the wall.
Finally, the ender portal frames are more concentrated at the lower half of the map. There are also very many of them. Remember that more automatically spawn.
There’s a lot of detail missing, and the map seems quite bland from an overlook.
Try to fill it up a bit, and not rather focus only on the bottom but the whole map.
The idea is nice, I like the dragon head! But like the other suggestions yeah you should definitely add more types of blocks, it looks bland. Maybe mix some sandstone into the walls?